Related Experiment Video
Updated: Oct 29, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
Magnetic Exchange-Coupled Superconducting Devices with Broken Symmetry for Cryogenic Memory
Josep Ingla-Aynés1, Lina Johnsen Kamra2, Franklin Dai3
1Massachusetts Institute of Technology, Francis Bitter Magnet Laboratory and Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA.
Abstract:
Ultrathin superconducting (SC) films embedded between two ferromagnetic insulators (FI) experience magnetic-exchange coupling, enabling the switching of the superconducting state by controlling the relative FI magnetization alignment. We investigate micrometer-scale devices patterned from such thin-film heterostructures and demonstrate their reproducible operation as nonreciprocal superconducting memory elements. Single-cell writing is realized using current-pulse-induced, heat-assisted magnetic switching. Furthermore, at a lower temperature, symmetry breaking gives the memory elements a marked nonreciprocity, with zero magnetic field superconducting diode efficiencies exceeding ±60%. These results present highly scalable FI/SC/FI hybrid structures as a contender for state-of-the art robust superconducting memories for neuromorphic superconducting computing and new data guiding schemes.
Related Concept Videos
Types Of Superconductors
Superconductor
Ferromagnetism
Atomic Nuclei: Nuclear Relaxation Processes
Atomic Nuclei: Nuclear Spin State Overview
Atomic Nuclei: Nuclear Spin State Population Distribution

